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Employee Benefit Plans (Assumptions) (Details)	12 Months Ended
	Dec. 26, 2012	Dec. 28, 2011	Dec. 29, 2010
Weighted-average assumptions used to determine benefit obligations
Discount rate	4.18%	4.59%
Measurement date	Dec. 26, 2012	Dec. 28, 2011
Weighted-average assumptions used to determine net perioidic pension cost
Discount rate	4.59%	5.42%	5.99%
Expected long-term rate of return on assets	7.75%	8.00%	8.00%
Measurement date	Dec. 26, 2012	Dec. 28, 2011	Dec. 29, 2010

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- Definition

Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Measurement Date

+ References

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X

- Definition

The interest rate used to adjust for the time value of money for the plan.

+ References

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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- Definition

The interest rate used to adjust for the time value of money.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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- Definition

An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.

+ References

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph 5

-Subparagraph j

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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